Mode oe coitstbuctikg bebtch abtd othek vises



UNITED STATES PATENT OFFICE.

LINUS DEAN, OF UTIOA, NEW YORK.

MODE OF CONSTRUCTINGLBENCH AND OTHER VISES.

Specificaton of Letters Patent No. 127, dated February 16, 1837.

To all wlwm it may concern:

Be it known that I, LINUs DEAN, of thev not made to open by means of a]oint pin,

in the ordinary manner, but it is provided with grooves, on its lowerside, which fit on to, and by means of whichV it slides freely along, ahorizontal bar, the upper edge of which projects over on each side so asto form tongues, or ribs, which fit into the grooves of the sliding jaw;upon one end of this horizontal bar the fiXed jaw is situated, beingfirmly attached thereto. The bar has fianches on its lower side, bywhich it is to be attached to the bench. Instead of moving the slidingjaw by a screw, I effect this by means of a rack, and a spiral, orvolute, wheel, the fillet of which takes into the teeth on the rack,which teeth occupy the upper side of the sliding bar.

The spiral, or volute, wheel, revolves upon a pin rising from thesliding jaw, near to its back end'; the spiral, or volute, is formedupon the lower face of this wheel, making one entire turn thereon. Thewheel is inclined back from a horizontal position, to enable the fillet,or spiral, to take into the rack teeth; a projecting pint-le on theupper side of the wheel recelves a handle, or wrench, by which it may beturned. This pintle forms a socket in the center of the wheel to receivethe pin on which it turns.

The size of the respective parts will, of

course, depend upon the size of the' vise itself. The following are thegeneral dimenslons of the principal parts of one which I have made.V Thebar is about two feet in length, two and a half inches deep, and one anda fourth inch wide. The fixed jaw is about the size, and is in the form,of that of an ordinary smith,s vise; the movable jaw 1s of the same sizeand form, but it has a proJecting piece extending back about six inches,which forms a part of the cheeks of the slide, and from which rises thepin upon which the spiral wheel revolves; theV wheel 1s about siX inchesin diameter, the thread, or fillet, forming the spiral, aboutfiveeighths of an inch square; and the pin which passes through thewheel, two inches high, and one inch and a half in diameter. The bar ofthis vise is to be secured upon the bench with the fixed jaw toward theworki i man.

Having thus fully described the constructlon of my improved vise, I dohereby declare that I do not claim to be the inventor of the slidingjaw, this having been before LINUs DEAN.

Witnesses IBA CHASE, J AMEs DEAN.

